/** * Test to see if we can determine the image format. * * @param string $data * * @return ImageFormat|null */ public function getImageFormat(&$data) { if (!$data || strlen($data) < 5) { return null; } // JPEG: FF D8 if (ord($data[0]) == 0xff && ord($data[1]) == 0xd8) { return ImageFormat::JPEG(); } // PNG: 89 50 4E 47 if (ord($data[0]) == 0x89 && substr($data, 1, 3) == 'PNG') { return ImageFormat::PNG(); } // GIF87a: 47 49 46 38 37 61 // GIF89a: 47 49 46 38 39 61 if (substr($data, 0, 6) == 'GIF87a' || substr($data, 0, 6) == 'GIF89a') { return ImageFormat::GIF(); } return null; }
public function testMetadataRetrieval() { $inspector = new ImageInspector(); $fn = __DIR__ . '/../Resources/image.png'; $im = new ImageManager(new Filesystem(new LocalAdapter(static::$tmp_dir . 'remote')), new EphemeralCachePool(), [], true); $image = $im->loadFromFile($fn, self::TEST_KEY); $im->push($image); $metadata = $inspector->getImageMetadata($image); $this->assertEquals($metadata->getFormat(), ImageFormat::PNG()); $this->assertEquals($metadata->getDimensions(), new ImageDimensions(300, 300)); $this->assertEquals($metadata->getResolution(), new ImageDimensions(72, 72)); $this->assertEquals($metadata->getOrientation(), ImageOrientation::LANDSCAPE()); }